Network-wise concordance of multimodal neuroimaging features across the Alzheimer's disease continuum.
Alzheimer's disease
atrophy
biomarkers
concordance
concordance of atrophy and hypometabolism
fluorodeoxyglucose positron emission tomography
hypometabolism
magnetic resonance imaging
magnetic resonance imaging and fluorodeoxyglucose positron emission tomography concordance
multimodal neuroimaging
structure–function relationships
suspected non‐Alzheimer's disease pathologic change
Journal
Alzheimer's & dementia (Amsterdam, Netherlands)
ISSN: 2352-8729
Titre abrégé: Alzheimers Dement (Amst)
Pays: United States
ID NLM: 101654604
Informations de publication
Date de publication:
2022
2022
Historique:
received:
29
12
2021
revised:
17
02
2022
accepted:
25
02
2022
entrez:
2
5
2022
pubmed:
3
5
2022
medline:
3
5
2022
Statut:
epublish
Résumé
Concordance between cortical atrophy and cortical glucose hypometabolism within distributed brain networks was evaluated among cerebrospinal fluid (CSF) biomarker-defined amyloid/tau/neurodegeneration (A/T/N) groups. We computed correlations between cortical thickness and fluorodeoxyglucose metabolism within 12 functional brain networks. Differences among A/T/N groups (biomarker normal [BN], Alzheimer's disease [AD] continuum, suspected non-AD pathologic change [SNAP]) in network concordance and relationships to longitudinal change in cognition were assessed. Network-wise markers of concordance distinguish SNAP subjects from BN subjects within the posterior multimodal and language networks. AD-continuum subjects showed increased concordance in 9/12 networks assessed compared to BN subjects, as well as widespread atrophy and hypometabolism. Baseline network concordance was associated with longitudinal change in a composite memory variable in both SNAP and AD-continuum subjects. Our novel study investigates the interrelationships between atrophy and hypometabolism across brain networks in A/T/N groups, helping disentangle the structure-function relationships that contribute to both clinical outcomes and diagnostic uncertainty in AD.
Sections du résumé
Background
UNASSIGNED
Concordance between cortical atrophy and cortical glucose hypometabolism within distributed brain networks was evaluated among cerebrospinal fluid (CSF) biomarker-defined amyloid/tau/neurodegeneration (A/T/N) groups.
Method
UNASSIGNED
We computed correlations between cortical thickness and fluorodeoxyglucose metabolism within 12 functional brain networks. Differences among A/T/N groups (biomarker normal [BN], Alzheimer's disease [AD] continuum, suspected non-AD pathologic change [SNAP]) in network concordance and relationships to longitudinal change in cognition were assessed.
Results
UNASSIGNED
Network-wise markers of concordance distinguish SNAP subjects from BN subjects within the posterior multimodal and language networks. AD-continuum subjects showed increased concordance in 9/12 networks assessed compared to BN subjects, as well as widespread atrophy and hypometabolism. Baseline network concordance was associated with longitudinal change in a composite memory variable in both SNAP and AD-continuum subjects.
Conclusions
UNASSIGNED
Our novel study investigates the interrelationships between atrophy and hypometabolism across brain networks in A/T/N groups, helping disentangle the structure-function relationships that contribute to both clinical outcomes and diagnostic uncertainty in AD.
Identifiants
pubmed: 35496375
doi: 10.1002/dad2.12304
pii: DAD212304
pmc: PMC9043119
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e12304Informations de copyright
© 2022 The Authors. Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring published by Wiley Periodicals, LLC on behalf of Alzheimer's Association.
Déclaration de conflit d'intérêts
The authors declare no conflicts of interest.
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